如何设置骨干Model.idAttribute？ [英] How to set Backbone Model.idAttribute?

问题描述

我使用的MongoDB /锂PHP框架，骨干力量。

我想我所有的模型ID（S）和idAttribute（S）是同我的数据库文件ID（即'_id'/ mongoid）

问题：

1. 当我打印model.idAttribute的价值，它显示为刚刚_id。


2. 当我打印model.get（'idAttriubte'），它是不确定的。


3. 如何确保idAttribute设置为相同的数据库ID / mongoid？

下面是模型类：

  window.app.IHoliday = Backbone.Model.extend（{
    urlRoot：HOLIDAY_URL，
    idAttribute：'_id'，
    ID：'_id'，
    //为节日的默认属性。
    默认值：{
    }，    初始化：功能（道具）{
    }，
}）;
 

下面是视图code，呼吁取的模式。文档的mongoid传递到这个页面作为隐藏输入（holiday_id）。

 的console.log（'假日网址：'+ HOLIDAY_URL）;
        VAR假日=新window.app.IHoliday（{_id：holiday_id}）;
        的console.log（'节前取：\\ n'+ JSON.stringify（节日））;
        Holiday.fetch（
                {
                    成功：函数（）{
                        //警报（'假日进账：'+ JSON.stringify（节日））;
                        的console.log（'HOLIDAY抓取时间：\\ n'+ JSON.stringify（节日））;
                        的console.log（'假日名称：'+ Holiday.get（'HOLIDAY_NAME'））;
                        的console.log（'假日ID：'+ Holiday.id）;
                        的console.log（'假日idAttribute：'+ Holiday.idAttribute）;
                        的console.log（'假日idAttribute：'+ Holiday.get（'idAttribute'））;
                    }
                }）;
 

从萤火控制台输出：

 节前取：{_ ID：50bcaab24fbe3dfc1700000b}
GET HTTP：//本地主机：8080 / LI3 /节假日/负载/ 50bcaab24fbe3dfc1700000b 200 OKHOLIDAY抓取时间：
{\"_id\":\"50bcaab24fbe3dfc1700000b\",\"holiday_name\":\"eeeeeeeeeeeeeeeee\",\"description\":\"\",\"star_rating\":\"3\",\"holiday_type\":\"family\",\"rooms\":\"1\",\"adults\":\"2\",\"child\":\"0\",\"emails\":\"\"}假日名称：eeeeeeeeeeeeeeeee
假日ID：50bcaab24fbe3dfc1700000b
假日idAttribute：_id
假日idAttribute：未定义
 

编辑：
下面的工作......注释掉模型类中的id后：

  window.app.IHoliday = Backbone.Model.extend（{
    urlRoot：HOLIDAY_URL，
    // ID：'_id'，
    idAttribute：'_id'，
    //为节日的默认属性。
    默认值：{
    }，    初始化：功能（道具）{
    }，
 

解决方案

idAttribute 包含类至极的成员的名称将用作ID。所以，如果你使用 idAttribute：'_id'，骨干网将使用会员 _id 为你的类的ID。

如果你想使用的属性 holiday_id 为你的类 IHoliday 的ID，您可以尝试：

  window.app.IHoliday = Backbone.Model.extend（{
    urlRoot：HOLIDAY_URL，
    idAttribute：holiday_id'，
    //为节日的默认属性。
    默认值：{
    }，    初始化：功能（道具）{
    }，
}）;VAR假日=新window.app.IHoliday（{holiday_id：holiday_id}）;
 

骨干网将使用 holiday_id 属性，而不是常规的 ID 属性。

I'm using MongoDb/Lithium php framework with backbone.

I want all my model id(s) and idAttribute(s) to be same as my database document id (i.e '_id'/mongoid)

Questions:

1. When I print the value of model.idAttribute, it is shown as just _id.
2. When I print model.get('idAttriubte'), it is undefined.
3. How do I ensure that the idAttribute is set as the same as the database id/mongoid?

Here is the model class:

window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    idAttribute: '_id',
    id: '_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },      
});

Here is the view code, calling fetch on the model. The mongoid for the document is passed to this page as a hidden input (holiday_id).

console.log('Holiday URL:' + HOLIDAY_URL );
        var Holiday = new window.app.IHoliday({ _id: holiday_id });
        console.log('HOLIDAY before fetch: \n' + JSON.stringify(Holiday));
        Holiday.fetch(
                {
                    success: function(){
                        //alert('Holiday fetched:' + JSON.stringify(Holiday));
                        console.log('HOLIDAY Fetched: \n' + JSON.stringify(Holiday));
                        console.log('Holiday name:' + Holiday.get('holiday_name'));
                        console.log('Holiday id:' + Holiday.id);
                        console.log('Holiday idAttribute:' + Holiday.idAttribute);
                        console.log('Holiday idAttribute:' + Holiday.get('idAttribute'));
                    }
                });

The output from firebug console:

HOLIDAY before fetch:{"_id":"50bcaab24fbe3dfc1700000b"}
GET http://localhost:8080/li3/holidays/load/50bcaab24fbe3dfc1700000b 200 OK

HOLIDAY Fetched: 
{"_id":"50bcaab24fbe3dfc1700000b","holiday_name":"eeeeeeeeeeeeeeeee","description":"","star_rating":"3","holiday_type":"family","rooms":"1","adults":"2","child":"0","emails":""}

Holiday name:eeeeeeeeeeeeeeeee
Holiday id:50bcaab24fbe3dfc1700000b
Holiday idAttribute:_id
Holiday idAttribute:undefined

EDIT: The following worked...after commenting out the entry for id in the model class:

    window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    //id: '_id',
    idAttribute: '_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },

解决方案

idAttribute contains the name of the member of the class wich will be use as the id. So, if you use idAttribute: '_id', Backbone will use the member _id as the id of your class.

If you want to use the attribute holiday_id as the id of your class IHoliday, you may try :

window.app.IHoliday = Backbone.Model.extend({
    urlRoot: HOLIDAY_URL,
    idAttribute: 'holiday_id',
    // Default attributes for the holiday.
    defaults: {
    },

    initialize: function(props) {
    },      
});

var Holiday = new window.app.IHoliday({holiday_id : holiday_id });

Backbone will use the holiday_id attribute instead of the regular id attribute.

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